Agnew is a supporter of the theory of the hollow Earth , recently fished out of the publication of the book Hollow Earth U.S. author David Standish (2006).
According to this theory, the interior of the earth would be empty and it would be habitable; the steps for this interior space you would find at the poles, and would lead to a new world that would be on the inner surface of the crust. Proponents of this view, which has its origins in some theories of the seventeenth and eighteenth century , they refuse to accept established scientific models such as plate tectonics or gravitation .
Agnew, to prove this theory, since 2004, tried to organize a cruise to the North Pole with an ice pick . From this project, called North Pole Inner Earth Expedition ( NPIEE ), he also made into a film, a documentary and promotional organization for future implementation of the trip.
Agnew has promoted the trip as the greatest geological expedition in history, but has had difficulty raising the necessary funds, postponing from year to year.